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Memorex Telex 9290


Type 9590-ALG
Serial 55-2815Y
Manufacturer IBM Corp., United Kingdom Ltd. (*)
FCC ID AN09590C50
Date May 1994

Physical description

Type Desktop
Dimensions (HxWxD) 140 x 440 x 430 mm
Weight 11.4 Kg
Drive bays 3 x 3.5" half-height, 1 x 5.25" half-height (all accessible)
Power supply 194 W, 110-220VAC manual voltage switch (9418)

Main board

Chipset/Manufacturer IBM (planar id FF6F)
Bus Micro Channel (MCA) 32-bit
Expansion slots 4 x 32-bit (1 w. video ext., 2 available), one 64-bit for processor complex (proprietary), two 64-bit for memory cards (proprietary)
Interface FDD (2 units)
Video Integrated 16-bit XGA display adapter (1024x768, 16 colours; 640x480, 256 colours)
Ports PS/2 keyboard, PS/2 mouse, 2 buffered serial (UART 16550A), parallel, XGA

Cards

Processor
Type Type-2 complex (**)
BIOS IBM, Nov. 2, 1992 (92 Kb, sticker on BIOS chip 21/09/93)
Processor Intel 80486DX2-50 MHz (32-bit) PGA
Coprocessor Integraded on 486DX
Ext. Cache N/a
Max Memory 64 Mb (8 x 8 Mb) (**)
Memory 2 memory riser cards (undated), each featuring 4 sockets for 70ns 72-pin SIMMs, parity checked (PS/2 proprietary) (***)
Installed RAM 32 Mb 70ns on riser cards (2 x 8 Mb and 4 x 4 Mb SIMMs, und.)
Controller IBM 32-bit PS/2 bus master SCSI adapter/A with 512 Kb cache (id 8EFF) (sticker 06/07/93, cables 2/9/93)
Video IBM 32-bit XGA-2 graphic adpt. (id 8FDA) (sticker 07/05/93)

Storage

Diskette drive 2.88 Mb, 3.5 inch slim-height (Mitsubishi MF356F, FEB. 1994)
Hard disk Maxtor MXT-540S (540 Mb), SCSI, 3.5 inch slim-height
2nd hard disk Maxtor MXT-540S (540 Mb), SCSI, 3.5 inch slim-height ADDITION

Trivia

Acquisition Summer 99, collected in a dump together w. other appliances (incl. another 9290 which was demolished)
Condition Very good, setup needed (cards pulled off)
Installed sw IBM OS/2 2.1 (Italian), not booting
Modifications Removed token-ring adapter, added second hard drive, added 2 x 8 Mb and 2 x 4 Mb memory SIMMs (it had 16 Mb only)
Current status All hw working (2nd hard drive sometimes doesn't spin up at boot), a few scratches on top cover
Current O.S. MS DOS 6.0 (US English), MS Windows for Workgroup 3.11 (Italian)
Spare parts Almost everything, incl. drives, planar, etc.

Notes

(*) This machine is in fact an IBM Enhanced Personal System/2 Model 90 XP 486.

(**) Existing processor complex can be changed with a newer one (Type-3 or 4, CPUs up to Pentium-90, supporting up to 256 Mb of RAM).

(***) Slower 80ns SIMMs can be used instead. Using a Type-2 processor complex SIMMs need not to be installed in pairs.


Peripherals: KEYBOARDS, MONITORS, MICES, PRINTERS


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This page was first published on the web on Nov. 11, 2001
Last revised May 24, 2004
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